set hive.mapred.mode=nonstrict;
explain select cast(amc as decimal(15,4))/cast(pmc as decimal(15,4)) am_pm_ratio from ( select count(*) amc from web_sales, household_demographics , time_dim, web_page where ws_sold_time_sk = time_dim.t_time_sk and ws_ship_hdemo_sk = household_demographics.hd_demo_sk and ws_web_page_sk = web_page.wp_web_page_sk and time_dim.t_hour between 6 and 6+1 and household_demographics.hd_dep_count = 8 and web_page.wp_char_count between 5000 and 5200) at, ( select count(*) pmc from web_sales, household_demographics , time_dim, web_page where ws_sold_time_sk = time_dim.t_time_sk and ws_ship_hdemo_sk = household_demographics.hd_demo_sk and ws_web_page_sk = web_page.wp_web_page_sk and time_dim.t_hour between 14 and 14+1 and household_demographics.hd_dep_count = 8 and web_page.wp_char_count between 5000 and 5200) pt order by am_pm_ratio limit 100;
